Home / 202,981.12-280,381.68-155,817.28

Finding the Fourth Proportional to 202,981.12, 280,381.68 and 155,817.28

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Solution

The fourth proportional to 202,981.12, 280,381.68 and 155,817.28 is: 215,233.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,981.12 : 280,381.68 = 155,817.28 : x
  2. Step 2: Convert to fraction form
    202,981.12/280,381.68 = 155,817.28/x
  3. Step 3: Cross multiply
    202,981.12x = 280,381.68 × 155,817.28
  4. Step 4: Simplify right side
    202,981.12x = 43,688,310,739.43
  5. Step 5: Solve for x
    x = 43,688,310,739.43/202,981.12
  6. Step 6: Final answer
    x = 215,233.37

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.